RPi4, broken HDMI0 port.

windg

The HDMI0 port is broken , i connect the cable to HDMI1. The system boot fine but when was the time for emulationstation to start , black screen. I press F4 and the terminal appear.

It is something that i can done and use the system from port 1?

Thanks!

config.txt

mitu

Out of the box, there's nothing that needs to be done, both ports should work. Do you have any configurations in /boot/config.txt that are display specific ?

windg

The only thing i did was to change the resolution to 1280x720 and add overscan settings to remove the black boarders around the screen.

I change this line on the config.txt:

dtoverlay=vc4-fkms-v3d

to

dtoverlay=vc4-kms-v3d

and no more black screen but now i don't have sound.

mitu

@windg said in RPi4, broken HDMI0 port.:

and no more black screen but now i don't have sound.

Yeah, that won't work and until this is supported by RetroPie I advise you to leave the default configuration with fkms on.

Post your entire /boot/config.txt and the output of dmesg after booting (use pastebin.com for the text).

windg

@mitu

config.txt

dmesg

mitu

You display doesn't send any EDID data. Add

hdmi_ignore_edid=0xa5000080

to config.txt and try again.

windg

Black screen again.

I test and a experimental setup of RetroPie that i have install on top of Bullseye 64bit and it is working fine. I think i will keep this for now, performance is very good for the emulators that i am using. Be carefull everyone, mini hdmi ports are very fragile. Thank you very much for your time mitu!

windg

I tryed to boot a fresh install of RetroPie 4.8 from HDMI1 and everything is working fine. Maybe the previous setup, that was set with HDMI0, create a conflict.

windg

I faced the same issue with a Pi 400. It looks that the issue is specific with the resolution and the second HDMI2 port. If I boot the system with the default resolution everything is fine. If i change the resolution to CEA 4 (1280x720 60hz) then a black screen appear instead of Emulationstation.

To be sure, I try to a second RPi4 and in a different TV and the same issue occured.

So if someone have the same issue, the HDMI 1 port for Rpi4 is near to power cable and in the Pi 400i is near to SD card slot or leave the default resolution if you want to use the HDMI2.